Our experience of PMC's Twenty speaker series up to this point has been a flawless one – the 21s, 22s, 23s and 26s have all walked away with five stars. Now there's a new addition looking to follow suit.

We have not one, but two state-of-the-art demos to treat you with this weekend. In our main cinema room we'll be showing off a Dolby Atmos 5.2.4 system with a 4K screen, and outside the room you'll be able to hear Meridian MQA for yourself.

A date for all smartphone enthusiasts to pencil in your diaries, an upgrade for owners of Pro-Ject Debut Carbon turntables and a new Ultra HD alliance – here's all the news in brief from What Hi-Fi?'s Wednesday Wrap.